Looks great. I am looking forward to testing it when it is awailable.
However, one tweak done to the exa card is to cut the 5Vusb and apply 5V from the dac`s supply. This has a big effect on the sound and I hope this will be possible on your module as well. In other words external power to both the usb-side and the audio-side. If there is need for regulation I would also like to have the option of using tridents instead of normal off the shelf chip regs.

I would love to have this capability, with the endgame objective to be able to utilise the volume control of the Buffalo (2) directly from within windows, without having to use an arduino or similar.

Really glad it's finally all coming together

Cheers,
Phil

Hi Russ,

I'd love this too, but a bit modified:
"I would love to have this capability, with the endgame objective to be able to utilise the volume control of the Buffalo 2+3 directly from within Linux (and other OS), without having to use an arduino or similar."